Improvement in steam or gas and air blast pipes for furnaces



G. H. G00 DSELL.

Steam, or Gas and Air YBI ast-Pipe for Furnaces STATES FFI@ GEORGE H.GOODSELL, OF VLEEGHBURG, PENNSYLVANIA.

y IMPROVEMENT IN STEAM OR4 GAS AND AIR BLAST PIPES FOR FURNACES.

Specification forming part of Letters Patent No. 165,56 l, dated July13, 1875; application filed May 17, 1875.

To all whom it may concern Be it known that I, GEoRGE H. GooDsELL, ofLeechburg, in the county of Armstrong and State of Pennsylvania, haveinvented a new and useful Improvement in Combined Gas or Steam and AirBlasts for Furnaces for nietallurgie and other purposes; and I do herebydeclare that the following is a full, clear, and exact description oi'the same, reference being had to the accompanying' drawing, forming partof this specitication.

This invention is applicable to blastiurnaces of different kinds,includingfurnaces for the reduction ot ore, iron-refineries,puddlingvi'urnaces, and, in fact, any furnaces in which a blast is usedand an intense heat is required, as in the manufacture ot' iron, forwhich purpose the invention will here be described as applied to.

rlhe invention consists in the combination,

- with the air-blast pipe, of one or more steam 0r gas pipes arranged toconduct a current or currents of steam or gas, or both, in front of theair-blast as it issues from its pipe, whereby a more intense beat-isproduced, also a more perfect combination eii'ected andthe product oftheiurnace improved.

Figure l is a side view ot' a furuacetuyere, with air-blast pipe andsteam or gas pipe combined, Fig.2, a longitudinal vertical section ofthe same, and Fig. 3 ahorizontal section thereof.

A is the tuyere, which may be of the ordinary construction, theimprovement being capable of application to tuyeres now 1u use Withoutaltering the saine. B is the air-blast pipe inserted in the tuyere. C Care tubes arranged to enter the tuyere on either side of the air-blastpipe, and with their delivery ends made to project in front of saidblrs! pipe Within the tuyere. These tubes serve.

to conduct steam or gas, or both, in advance of the air-blast, and sothat the steam or gas is caused to mingle with the air of the blast atthe most efficient point to bring them and the air in contact with theiire. Said tubes U (l may be connected outside of the tuyere with avalve, D, common to both, for regulating the supplyl ot' steam or gas,or for shutting' ofi' the same when the air-blast alone is required tobe used; or the steam or gas may be used alone, or in combination withthe air, as circumstances require. The valve D is connected at b withthe gas-supply pipe, or, by removing the latter, with a steam-supplypipe ofthe same size, by means ofa union coupling. Goal or any othersuitable gas may be used. The tubes C O, instead of being arrangedoutside of the blast-pipe B, as represented, may pass through theinterior of said pipe. 'Ihe gas or steam being conducted through orVinside of the tuyere to a point in front of the blastpipe nearest tothe furnace, the force ot' the blast will drive the steam or gas to itsproper point oi' contact with the fire. By this mode ot introducing thesteam or gas, or both, in common with the air of the blast, a moreintense heat may be obtained, and more peri'ect combustion, also a muchsuperior quality of iron be produced.

I claim- The combination of the tuyere A, air-blast pipe B, arrangedtherein, and -steam-tubes c c on the exterior of', and projecting infront ot', the air-blast pipes, substantially as shown and described.

. GEORGE H. GOODSELL.

Witnesses BENJAMIN W. HOFFMAN, VERNON H. HARRIS.

